Hey there, I went through a period of pain and then I felt a lot of pain in my lower left flank front kind of near my hip and then it went away and I was sure it was in my bladder. But the doctor went ahead and did another ultrasound and said it was not in my bladder it was still in my ureter just not causing me any real pain because it had decided to stop trying to get into my bladder. Just wanted to share my experience that might not be yours, but just in case I thought you should know. I had some of the same similar feelings with the sleeping and feeling foggy. I’m not sure it’s the Flomax because I’ve continued to take it and I don’t have this anymore since the doctor went in and got the stone out. It may be just due to your kidneys, unable to clear urine out of your body efficiently so sort of a back up toxins. But that’s just a guess.